scholarly journals Alternant Conjugate Systems. IV. Ultraviolet Spectroscopic Properties and Photoisomerization of Geometrical Isomers ofp-Distyrylbenzenes,p,p′-Distyrylstilbenes and Related Compounds

1962 ◽  
Vol 35 (1) ◽  
pp. 143-149 ◽  
Author(s):  
S\={o}ichi Misumi ◽  
Motoyuki Kuwana ◽  
Masazumi Nakagawa
Keyword(s):  
Spectroscopic Properties ◽  
Geometrical Isomers ◽  
Related Compounds

Improved syntheses, and structural and electronic characterization of carboxamide-substituted TpCONHPh,Meand TpCONHt-Bu,Meligands

2013 ◽  
Vol 69 (9) ◽  
pp. 947-953 ◽  
Author(s):  
Eric R. Sirianni ◽  
Glenn P. A. Yap ◽  
Eser S. Akturk ◽  
Klaus H. Theopold
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Spectroscopic Properties ◽  
Carbonyl Complexes ◽  
Strong Electron ◽  
Complex Molecules ◽  
Solvent Molecules ◽  
Related Compounds

Improvements in the syntheses of the carboxamide-substituted tris(pyrazolyl)borate ligands TpCONHPh,Me[tris(3-anilinocarbonyl-5-methylpyrazol-1-yl)borate] and TpCONHt-Bu,Me[tris(3-tert-butylaminocarbonyl-5-methylpyrazol-1-yl)borate] are reported. Their TlIsalts, namely [tris(3-anilinocarbonyl-5-methylpyrazol-1-yl-κN2)borato]thallium(I), [Tl(C33H31BN9O3)], (II), and [tris(3-tert-butylaminocarbonyl-5-methylpyrazol-1-yl-κN2)borato]thallium(I), [Tl(C27H43BN9O3)], (III), as well as the CuIcarbonyl complexes (TpCONHPh,Me)Cu(CO), namely carbonyl[tris(3-anilinocarbonyl-5-methylpyrazol-1-yl-κN2)borato]copper(I) tetrahydrofuran trisolvate, [Cu(C33H31BN9O3)(CO)]·3C4H8O, (IV), and (TpCONHt-Bu,Me)Cu(CO), namely carbonyl[tris(3-tert-butylaminocarbonyl-5-methylpyrazol-1-yl-κN2)borato]copper(I) tetrahydrofuran hemisolvate, [Cu(C27H43BN9O3)(CO)]·0.5C4H8O, (V), have been prepared. Their spectroscopic properties and structures are compared with those of related compounds. The molecules of (II)–(V) show hydrogen bonding to either solvent molecules or neighboring complex moleculesviaamide groups. The title compounds feature the ability to engage other ligands in hydrogen bonding and they show strong electron-withdrawing character. Compound (V) displays voids ofca800 Å3in the crystal structure.

Spectroscopic properties of firefly luciferin and related compounds; an approach to product emission

Biochemistry ◽  
1969 ◽  
Vol 8 (4) ◽  
pp. 1598-1607 ◽  
Author(s):  
Richard A. Morton ◽  
Thomas A. Hopkins ◽  
Howard H. Seliger
Keyword(s):  
Spectroscopic Properties ◽  
Firefly Luciferin ◽  
Related Compounds

Spectroscopic properties of crystals and monolayers of chlorophyll and related compounds

1957 ◽  
Vol 72 (2) ◽  
pp. 495-511 ◽  
Author(s):  
E.E. Jacobs ◽  
A.S. Holt ◽  
R. Kromhout ◽  
E. Rabinowitch
Keyword(s):  
Spectroscopic Properties ◽  
Related Compounds

A study of the molecular structure and spectroscopic properties of tetrahydro[4]beltene and related compounds

1999 ◽  
Vol 242 (2) ◽  
pp. 203-216
Author(s):  
V. Galasso ◽  
W. Grimme ◽  
J. Lex ◽  
D. Jones ◽  
A. Modelli
Keyword(s):  
Molecular Structure ◽  
Spectroscopic Properties ◽  
Related Compounds

Phenol sulfate esters: ultraviolet, infrared, 1H and 13C nuclear magnetic resonance spectroscopic investigation

1978 ◽  
Vol 56 (20) ◽  
pp. 2681-2685 ◽  
Author(s):  
Mark A. Ragan
Keyword(s):  
Spectroscopic Investigation ◽  
Spectroscopic Properties ◽  
Synthetic Methods ◽  
Sulfate Ester ◽  
H Nmr ◽  
Naturally Occurring ◽  
13C Nuclear Magnetic Resonance ◽  
Supplementary Material ◽  
Related Compounds ◽  
C Nmr

Renewed interest in naturally occurring phenol sulfate ester salts has necessitated modem spectroscopic investigation of these compounds. Synthetic methods, plus spectroscopic (uv, ir, 1H nmr, 13C nmr), chromatographic, and electrophoretic properties are given for the potassium salts of phenyl sulfate (1), pyrocatechol disulfate (2), resorcinol disulfate (3), hydroquinone disulfate (4), phloroglucinol mono- (5), di- (6), and tri- (7) sulfates, and for the 2-sulfate (8) and 2,5-disulfate (9) of 1,2,3,5-tetrahydroxybenzene (10). 13C nmr chemical shift effects resulting from the replacement of phenolic —OH with —OSO3K are reported. Spectroscopic properties of the related compounds 1,2,3-tribenzyloxybenzene (11), 2,6-dibenzyloxy-1,4-benzoquinone (12), 2,6-dimethoxy-1,4-benzoquinone (13), 1,3-dibenzyloxy-2,5-dihydroxybenzene (14), and of a tentatively identified 1,3-dibenzyloxy-2,5-dihydroxybenzene monoethyl ether (15) are available as supplementary material.

The chemistry of pyrrolic compounds. LIV. The chemistry of rhodins, verdins and related compounds

1984 ◽  
Vol 37 (1) ◽  
pp. 143 ◽  
Author(s):  
PS Clezy ◽  
AH Mirza ◽  
BN Ravi ◽  
LV Thuc
Keyword(s):  
Sodium Borohydride ◽  
Secondary Alcohol ◽  
Spectroscopic Properties ◽  
Aerobic Conditions ◽  
Derivatives Of ◽  
Related Compounds

Coprorhodin II trimethyl ester has been prepared and its chemical and spectroscopic properties examined. Autoxidation of coprorhodin yields coproverdin while reduction with sodium borohydride affords a secondary alcohol which readily dehydrates under aerobic conditions to furnish a benzo-chlorin. The chemistry of these derivatives of coprorhodin has been studied.

PREPARATION AND SPECTROSCOPIC PROPERTIES OF A PAIR OF GEOMETRICAL ISOMERS,cis- ANDtrans-BIS (ACETYLACETONATO) BIS (DIMETHYLPHENYLPHOSPHINE)COBALT(III) COMPLEXES

1981 ◽  
Vol 10 (4) ◽  
pp. 575-576 ◽  
Author(s):  
Kazuo Kashiwabara ◽  
Katsuaki Katoh ◽  
Junnosuke Fujita ◽  
Hiroaki Nishikawa ◽  
Muraji Shibata
Keyword(s):  
Spectroscopic Properties ◽  
Geometrical Isomers
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